<template>
  <div :id="id" :style="{ width: '100%', height: height }" :data="wordData"></div>
</template>
<script>
import wordcloud from 'echarts-wordcloud'
export default {
  name: 'VueWordCloud',
  props: {
    wordData: {
      type: Array,
      default: () => {
        return []
      },
    },
    sizeRange: {
      type: Array,
      default: () => {
        return [14, 30]
      },
    },
    title: {
      type: String,
      default: '',
    },
    height: {
      type: String,
      default: '300px',
    },
  },
  data() {
    return {
      id: '',
    }
  },
  created() {
    this.id = 'wordcloud-' + Math.random()
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart()
    })
  },
  updated() {
    this.$nextTick(() => {
      this.initChart()
    })
  },
  methods: {
    initChart() {
      const option = {
        title: {
          text: this.title,
          x: 'center',
        },
        backgroundColor: '#fff',
        // tooltip: {
        //   pointFormat: "{series.name}: <b>{point.percentage:.1f}%</b>"
        // },
        series: [
          {
            type: 'wordCloud',
            //用来调整词之间的距离
            gridSize: 10,
            //用来调整字的大小范围
            // Text size range which the value in data will be mapped to.
            // Default to have minimum 12px and maximum 60px size.
            sizeRange: this.sizeRange,
            // Text rotation range and step in degree. Text will be rotated randomly in range [-90,                                                                             90] by rotationStep 45
            //用来调整词的旋转方向，，[0,0]--代表着没有角度，也就是词为水平方向，需要设置角度参考注释内容
            // rotationRange: [-45, 0, 45, 90],
            // rotationRange: [ 0,90],
            rotationRange: [0, 0],
            //随机生成字体颜色
            // maskImage: maskImage,
            textStyle: {
              normal: {
                color: function () {
                  return (
                    'rgb(' +
                    [
                      Math.round(Math.random() * 250),
                      Math.round(Math.random() * 250),
                      Math.round(Math.random() * 240),
                    ].join(',') +
                    ')'
                  )
                },
              },
              emphasis: {
                shadowBlur: 6,
                shadowColor: '#ccc',
              },
            },
            //位置相关设置
            // Folllowing left/top/width/height/right/bottom are used for positioning the word cloud
            // Default to be put in the center and has 75% x 80% size.
            left: 'center',
            top: 'center',
            right: null,
            bottom: null,
            width: '100%',
            height: '100%',
            //数据
            data: this.wordData,
          },
        ],
      }
      let documentChart = document.getElementById(this.id)
      if (documentChart) {
        this.chart = this.$echarts.init(documentChart)
        this.chart.setOption(option)
      }
    },
  },
}
</script>
